Admit Card Bihar Polytechnic 2020 (DCECE) Available here. Bihar Polytechnic (DCECE) entrance examination will be held in June 2020 Examination at all over the Bihar Region. Bihar Polytechnic is also known as Diploma Certificate Entrance Competitive Examination (DCECE) 2020. It is a state level examination conducted for admissions into various engineering and non-engineering polytechnic programmes.